#include "function.h"

const static unsigned short crc16_table[256] = {
        0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
        0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
        0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
        0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
        0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
        0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
        0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
        0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
        0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
        0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
        0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
        0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
        0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
        0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
        0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
        0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
        0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
        0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
        0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
        0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
        0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
        0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
        0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
        0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
        0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
        0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
        0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
        0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
        0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
        0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
        0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
        0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
};

static const uint8_t aucCRCHi[] = {
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
    0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
    0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
    0x00, 0xC1, 0x81, 0x40
};

static const uint8_t aucCRCLo[] = {
    0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,
    0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,
    0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,
    0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
    0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
    0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32,
    0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,
    0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
    0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,
    0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
    0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1,
    0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
    0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,
    0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA,
    0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
    0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,
    0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
    0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,
    0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
    0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
    0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83,
    0x41, 0x81, 0x80, 0x40
};

void fc_copy_line_1(char* src,char* des)
{
    while(1)
    {
        if((*src == 0x0d)||(*src == 0x0a))
        {
            break;
        }
        *des++ = *src++;
    }
    *des = 0;
}

char* fc_get_line_1(char* src)
{
    while((*src == 0x0d)||(*src == 0x0a))
    {
        src++;
    }
    return src;
}

void fc_char2hex(uint8_t *pbSrc, uint8_t *pbDest, int srcLen)
{
    int i;
    for (i = 0;i < srcLen;i++) {
        char hchar = 0x30 + ((pbDest[i]>>4)&0x0f);
        if(hchar < 0x3a)
        {
            pbSrc[2*i+0] = (uint8_t)hchar;
        }
        else
        {
            pbSrc[2*i+0] = 0x41 + (uint8_t)hchar - 0x3a;
        }

        char lchar = 0x30 + (pbDest[i]&0x0f);
        if(lchar < 0x3a)
        {
            pbSrc[2*i+1] = (uint8_t)lchar;
        }
        else
        {
            pbSrc[2*i+1] = 0x41 + (uint8_t)lchar - 0x3a;
        }
    }
}


void fc_hex2char(uint8_t *pbSrc, uint8_t *pbDest, int srcLen)
{
    int i;
    uint8_t hData = 0;
    uint8_t lData = 0;

    for (i = 0;i < srcLen;i++)
    {
        if (0x41 <= *(pbSrc+2*i) &&  *(pbSrc+2*i) <= 0X46)
        {
            //字母0X41-0X46
            hData = *(pbSrc+2*i) - 'A' + 10;
        }
        else if (0x61 <= *(pbSrc+2*i) && *(pbSrc+2*i) <= 0X66)
        {
            //小写字母
            hData = *(pbSrc+2*i) - 'a' + 10;
        }
        else if (0x30 <= *(pbSrc+2*i) && *(pbSrc+2*i) <= 0X39)
        {
            //数字0X30-0X39
            hData = *(pbSrc+2*i) - '0';
        }

        if (0x41 <= *(pbSrc+2*i+1) && *(pbSrc+2*i+1) <= 0X46)
        {
            //字母0X41-0X46
            lData = *(pbSrc+2*i+1) - 'A' + 10;
        }
        else if (0x61 <= *(pbSrc+2*i+1) && *(pbSrc+2*i+1) <= 0X66)
        {
            //小写字母
            lData = *(pbSrc+2*i+1) - 'a' + 10;
        }
        else if (0x30 <= *(pbSrc+2*i+1) && *(pbSrc+2*i+1) <= 0X39)
        {
            //数字0X30-0X39
            lData = *(pbSrc+2*i+1) - '0';
        }

        *(pbDest+i) = hData*16+lData;
    }
    i++;
}

uint16_t fc_calculate_crc16(uint8_t *pBuf,uint16_t value, uint32_t size)
{
    uint32_t    i = 0;
    uint8_t     CRCH = (value>>8);
    uint8_t     CRCL = value;
    uint16_t    index = 0x0000;

    while (size-- > 0)
    {
        index = (uint16_t)(CRCL ^ pBuf[i++]);
        CRCL = (uint8_t)(CRCH ^ aucCRCHi[index]);
        CRCH = aucCRCLo[index];
    }

    return (CRCL << 8 | CRCH);
}

uint16_t fc_calculate_crc16_modbus(uint8_t *pBuf, uint16_t size)
{
    uint16_t value = 0xffff;
    while(size--)
    {
        value ^= *pBuf++;
        for(int i = 0; i < 8; i++)
        {
            if(value & 0x0001)
            {
                value = (value >> 1) ^ 0xa001;
            }
            else
            {
                value = value >> 1;
            }
        }
    }
    return value;
}

uint16_t fc_get_crc16(uint16_t reg_init, const uint8_t* data, uint16_t length)
{
    uint16_t cnt;
    uint16_t crc_reg = reg_init;
    for (cnt = 0; cnt < length; cnt++)
    {
        crc_reg = (crc_reg >> 8) ^ crc16_table[(crc_reg ^ *(data++)) & 0xFF];
    }
    return crc_reg;
}

uint16_t fc_crc16_ccitt(uint16_t reg_init, const uint8_t* data, uint16_t length)
{
    uint16_t cnt;
    uint16_t crc_reg = reg_init;
    for (cnt = 0; cnt < length; cnt++)
    {
        crc_reg = (crc_reg << 8) ^ crc16_table[((crc_reg >> 8) ^ *(data++)) & 0xFF];
    }
    return crc_reg;
}

uint16_t fc_crc16_modemx(uint16_t reg_init, const uint8_t* data, uint16_t length)
{
    uint16_t cnt;
    uint16_t crc_reg = reg_init;
    for (cnt = 0; cnt < length; cnt++)
    {
        crc_reg = (crc_reg << 8) ^ crc16_table[((crc_reg >> 8) ^ *(data++)) & 0xFF];
    }
    return crc_reg;
}

uint8_t fc_get_xor(uint8_t init,uint8_t* data,uint16_t datalen)
{
    uint8_t ret = init;
    for(int i = 0; i < datalen; i++)
    {
        ret ^= data[i];
    }
    return ret;
}
#if 0
uint8_t fc_is_first_run(uint8_t* ptbuf, uint16_t size)
{
    uint8_t ret = 1;
    for(int i = 0; i < size; i++)
    {
        if(ptbuf[i] != 0xff)
        {
            ret = 0;
            break;
        }
    }
    return ret;
}
#endif
uint8_t fc_array_is_value(uint8_t* ptbuf, uint8_t value, uint16_t size)
{
    uint8_t ret = 1;
    for(int i = 0; i < size; i++)
    {
        if(ptbuf[i] != value)
        {
            ret = 0;
            break;
        }
    }
    return ret;
}

uint8_t fc_mem_compare(uint8_t* mem1, uint8_t* mem2, uint16_t length)
{
    for(int i = 0; i < length; i++)
    {
        if(mem1[i] != mem2[i])
        {
            return 1;
        }
    }
    return 0;
}

uint8_t fc_get_sum(uint8_t* data,uint16_t datalen)
{
    uint8_t ret = 0;
    for(int i = 0; i < datalen; i++)
    {
        ret = ret + data[i];
    }
    return ret;
}

uint8_t fc_read_line(uint8_t* src,uint16_t srclen,char* _line)
{
    uint8_t count = 0;
    for(int i = 0; i < srclen-1; i++)
    {
        if( (src[i] == 0x0d)&&(src[i+1] == 0x0a) )
        {
            break;
        }
        _line[count++] = src[i];
    }
    _line[count] = 0;
    return count;
}

uint8_t fc_is_flash_init(uint8_t* ptbuf, uint16_t size)
{
    uint8_t ret = 1;
    for(int i = 0; i < size; i++)
    {
        if(ptbuf[i] != 0xff)
        {
            ret = 0;
            break;
        }
    }
    return ret;
}

//1234abcd 5678ABCD
uint32_t fc_hexstring_to_int(char *string)
{
    char *pt = string;
    uint32_t value = 0;
    uint8_t tmp = 0;

    while(1)
    {
        if((*pt >= '0')&&(*pt <= '9'))
        {
            value = value << 4;
            tmp = (uint8_t)(*pt - '0');
            value = value | tmp;
        }
        else if((*pt >= 'A')&&(*pt <= 'F'))
        {
            value = value << 4;
            tmp = (uint8_t)(*pt - 'A') + 0xa;
            value = value | tmp;
        }
        else if((*pt >= 'a')&&(*pt <= 'f'))
        {
            value = value << 4;
            tmp = (uint8_t)(*pt - 'a') + 0xa;
            value = value | tmp;
        }
        else
        {
            break;
        }
        pt++;
    }
    return value;
}

//1234567
uint32_t fc_atoi(char *string)
{
    char *pt = string;
    uint32_t value = 0;
    uint8_t tmp = 0;

    while(1)
    {
        if((*pt >= '0')&&(*pt <= '9'))
        {
            value = value * 10;
            tmp = (uint8_t)(*pt - '0');
            value = value + tmp;
        }
        else
        {
            break;
        }
        pt++;
    }
    return value;
}

